Home / 128,033.55-176,686.29-70,672.86

Finding the Fourth Proportional to 128,033.55, 176,686.29 and 70,672.86

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Solution

The fourth proportional to 128,033.55, 176,686.29 and 70,672.86 is: 97,528.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,033.55 : 176,686.29 = 70,672.86 : x
  2. Step 2: Convert to fraction form
    128,033.55/176,686.29 = 70,672.86/x
  3. Step 3: Cross multiply
    128,033.55x = 176,686.29 × 70,672.86
  4. Step 4: Simplify right side
    128,033.55x = 12,486,925,437.09
  5. Step 5: Solve for x
    x = 12,486,925,437.09/128,033.55
  6. Step 6: Final answer
    x = 97,528.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.